Argh! Visual Studio 2008 Express was crashing every time I right-clicked on any code belonging to the C++ template class declaration I was writing for my C++ course assignment. Googling "2008 intellisense crash" turned up a link to an MSDN forum discussion about VS crash when updating intellisense, wherein one of the posters suggested deleting the .ncb file. Before launching my project for the nth time, I deleted the .ncb file. Voila! Intellisense works again.